Disappearing lakes leave ice sheets largely unmoved

Fears that the rapid draining of water from the top of Greenland's ice sheet may be contributing to the rise of global sea levels have been allayed by new research. Though scientists confirmed that the water can drain away faster than Niagara Falls, it did not seem to accelerate the movement of the ice sheet into the ocean as previously thought.

Censorship at the US border

The United States government is afraid of ideas. At least it seems that way at the border. Over the past six years, numerous scholars, writers and human rights activists have found themselves suddenly barred from entering the US. Most happen to be vocal critics of Washington's foreign policy, many are Muslim, writes Melissa Goodman.

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